Table 1.
Characteristics of study infants
| Clinical characteristic | Median or no (percentage) | IQR | Range | N |
| Gestation (weeks) | 37.6 | 36.4 to 39.1 | 34.1 to 41.5 | 413 |
| Gender (male:female) | 57%:43% | NA | NA | 413 |
| Birth weight (grams) | 3000 | 2590 to 3405 | 1664 to 5060 | 413 |
| Birthweight z scores | −0.23 | −0.87 to 0.41 | −2.81 to 4.78 | 413 |
| Birth length (cm) | 49 | 47 to 51 | 40 to 58 | 403 |
| Birth length z scores | −0.03 | −0.75 to 0.57 | −3.38 to 4.23 | 403 |
| Birth head circumference (cm) | 34 | 32.5 to 35 | 28.5 to 47 | 409 |
| Birth head circumference z scores | 0.07 | −0.62 to 0.78 | −3.32 to 3.29 | 408 |
| APGAR 5 min | 9 | 9 to 9 | 4 to 10 | 409 |
| Presurgery C reactive protein (CRP) levels (mg/dL) | 7.5 | 5 to 20 | 1 to 188 | 933 |
| CRP levels within 72 hours of initial surgery (mg/dL) | 35.5 | 19 to 69 | 3 to 346 | 747 |
| CRP levels after 72 hours of surgery (mg/dL) | 15 | 7 to 29 | 1 to 325 | 2912 |
| Healthcare-associated blood stream infection | 27 (6.5%) | NA | NA | 413 |
| CSF culture positive | 1 (0.25%) | NA | NA | 413 |
| Lumbar puncture done | 14 (3.4%) | NA | NA | 413 |
| Viral infections (all respiratory) | 17 (4.1%) | NA | NA | 413 |
| Urinary tract infections (UTI) | 1 (0.24%) | NA | NA | 413 |
| Culture positive surgical site infections | 14 (3.4%) | NA | NA | 413 |
| Any healthcare-associated infection (blood stream or CSF or viral or UTI or wound infection) |
51 (12.4%) | NA | NA | 413 |
| No of antibiotic courses | 2 | 1 to 2 | 1 to 14 | 406 |
| Cumulative duration of antibiotics (days) | 6 | 4 to 8 | 1 to 56 | 406 |
| Surgery episodes under GA | 1 | 1 to 2 | 1 to 5 | 413 |
| No of episodes of hypoglycaemia (blood glucose <2.6 mmol/L) | 0 | 0 to 0 | 0 to 15 | 413 |
| Length of stay (days) | 18 | 11 to 26 | 1 to 153 | 413 |
| Post conception age at discharge (weeks) | 41 | 39.4 to 42.4 | 35.4 to 60.2 | 413 |
| Death before discharge | 13 (3.1%) | NA | NA | 413 |
| Death before 1 year | 13 (3.1%) | NA | NA | 413 |
| Corrected age at Griffiths assessment (months) | 12 | 12 to 12.5 | 10 to 15.5 | 270 |
| GQ scores at 12 months | 96.5 | 92 to 102 | 49 to 131 | 270 |
| SNDO | 43/262 (16.4%) | NA | NA | 262 |
GA, gestational age; GQ, general quotient; NA, not applicable; SGA, small for gestational age;SNDO, Suboptimal developmental outcomes.